Q. Which among the following chemical is most suitable in Food Processing industry, to be used as a food preservatives?
Answer: Benzoic Acid
Notes: Among the options provided, Benzoic Acid (option D) is the most suitable chemical for use as a food preservative in the food processing industry. It is highly effective, safe, versatile, and has minimal impact on the flavor of food products. Sodium Carbonate, Acetylene, and Methyl Salicylate are not commonly used for food preservation.

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